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annotate src/modes/ecb/ecb_start.c @ 191:1c15b283127b libtomcrypt-orig

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Import of libtomcrypt 1.02 with manual path rename rearrangement etc
author Matt Johnston <matt@ucc.asn.au>
date Fri, 06 May 2005 13:23:02 +0000
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children 39d5d58461d6
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191
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 *
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9 * Tom St Denis, [email protected], http://libtomcrypt.org
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file ecb_start.c
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15 ECB implementation, start chain, Tom St Denis
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16 */
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17
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18
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19 #ifdef ECB
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20
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21 /**
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22 Initialize a ECB context
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23 @param cipher The index of the cipher desired
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24 @param key The secret key
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25 @param keylen The length of the secret key (octets)
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26 @param num_rounds Number of rounds in the cipher desired (0 for default)
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27 @param ecb The ECB state to initialize
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28 @return CRYPT_OK if successful
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29 */
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30 int ecb_start(int cipher, const unsigned char *key, int keylen, int num_rounds, symmetric_ECB *ecb)
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31 {
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32 int err;
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33 LTC_ARGCHK(key != NULL);
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34 LTC_ARGCHK(ecb != NULL);
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35
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36 if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
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37 return err;
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38 }
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39 ecb->cipher = cipher;
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40 ecb->blocklen = cipher_descriptor[cipher].block_length;
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41 return cipher_descriptor[cipher].setup(key, keylen, num_rounds, &ecb->key);
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42 }
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43
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44 #endif